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Finding the Fourth Proportional to 665,654.90, 998,482.35 and 292,406.90

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Solution

The fourth proportional to 665,654.90, 998,482.35 and 292,406.90 is: 438,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,654.90 : 998,482.35 = 292,406.90 : x
  2. Step 2: Convert to fraction form
    665,654.90/998,482.35 = 292,406.90/x
  3. Step 3: Cross multiply
    665,654.90x = 998,482.35 × 292,406.90
  4. Step 4: Simplify right side
    665,654.90x = 291,963,128,668.22
  5. Step 5: Solve for x
    x = 291,963,128,668.22/665,654.90
  6. Step 6: Final answer
    x = 438,610.35

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.